18153550

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{197}}^1$

素因数の和:325

約数の個数: 48

約数和(自身を含む): 36091440

約数和(自身を除く): 17937890

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 95, 97, 190, 194, 197, 394, 475, 485, 950, 970, 985, 1843, 1970, 2425, 3686, 3743, 4850, 4925, 7486, 9215, 9850, 18430, 18715, 19109, 37430, 38218, 46075, 92150, 93575, 95545, 187150, 191090, 363071, 477725, 726142, 955450, 1815355, 3630710, 9076775, 18153550]

約数ペア:

[(1, 18153550), (2, 9076775), (5, 3630710), (10, 1815355), (19, 955450), (25, 726142), (38, 477725), (50, 363071), (95, 191090), (97, 187150), (190, 95545), (194, 93575), (197, 92150), (394, 46075), (475, 38218), (485, 37430), (950, 19109), (970, 18715), (985, 18430), (1843, 9850), (1970, 9215), (2425, 7486), (3686, 4925), (3743, 4850)]